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Iteration over std::vector: unsigned vs signed index variable
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For iterating backwards see this answer.
Iterating forwards is almost identical. Just change the iterators / swap decrement by increment. You should prefer iterators. Some people tell you to use std::size_t as the index variable type. However, that is not portable. Always use the size_type ...
What does flushing the buffer mean?
...u write one byte at a time, then each write of a byte is going to be very costly. So a common way to improve performance is to store the data that you are writing in a temporary buffer. Only when there is a lot of data is the buffer written to the file. By postponing the writes, and writing a large ...
How could I use requests in asyncio?
... comes in - the method you run in the executor should be self-contained ((mostly) like requests.get in the above example). That way you don't have to deal with shared memory, locking, etc., and the complex parts of your program are still single threaded thanks to asyncio.
– chr...
SVG fill color transparency / alpha?
Is it possible to set a transparency or alpha level on SVG fill colours?
5 Answers
5
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iOS 7: UITableView shows under status bar
...l view insets which do actually stop it from scrolling under, but at the cost of keeping the top of the table view under. I've attempted to set the UITableView frame to offset by 20 pixels, but it doesn't appear to take effect and as I currently need the app to be compatible with iOS 6 I can't ju...
Eclipse and Windows newlines
... that text files are saved in a format that is not specific to the Windows OS and most easily shared across heterogeneous developer desktops:
Navigate to the Workspace preferences (General:Workspace)
Change the Text File Encoding to UTF-8
Change the New Text File Line Delimiter to Other ...
How to tell git to use the correct identity (name and email) for a given project?
... I guess that should do it. I am expecting to have multiple local repositories for the same project, notably in order to switch between branches more easily without having to recompile everything. Maybe it's just a bad svn habit. Thanks.
– Martin Jambon
M...
Using the “animated circle” in an ImageView while loading stuff
...nation of classes to perform a task like this. It is incredibly useful across many types of applications and will give you a great insight into how Threads and Handlers can work together.
I'll get you started on how this works:
The loading event starts the dialog:
//maybe in onCreate
showDialog(...
Execute a terminal command from a Cocoa app
... pipe;
[task launch];
NSData *data = [file readDataToEndOfFile];
[file closeFile];
NSString *grepOutput = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog (@"grep returned:\n%@", grepOutput);
NSPipe and NSFileHandle are used to redirect the standard output of the task...
Why can't a text column have a default value in MySQL?
...or, while on other platforms it is often a warning. While not a bug, it's possible to get trapped by this if you write code on a lenient platform, and later run it on a strict platform:
Personally, I do view this as a bug. Searching for "BLOB/TEXT column can't have a default value" returns about ...